COSMOS 249 DEB, 3923
Orbit data source: Space-Track
COSMOS 249 DEB, 3923 is space debris in LEO originally from a launch on Sun, 20 Oct 1968 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
3923 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 249 DEB
1 03923U 68091BR 25286.31274249 .00004790 00000-0 26979-2 0 9991
2 03923 62.2272 11.4063 0610175 146.8466 217.2388 13.44307586683414Epoch: 2025-10-13T07:30Z
TLE epoch observation values (Epoch: 2025-10-13T07:30:20.951Z)
Latitude
-0.00002°
Longitude
-123.29833°
Altitude
1,467.412 km
Speed
6.95 km/s
True Right ascension
00h 45m 37s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
04:39:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,548.072 km
Perigee altitude
636.423 km
Semi-major axis
7,470.384 km
Eccentricity
0.06102
Inclination
62.2272°
RAAN
11.4063°
Arg. of periapsis
146.8466°
True anomaly
213.25353°
Mean anomaly
217.2388°
Eccentric anomaly
215.22245°
Mean motion
3.36147 °/min
Orbital period
107.1 mins
BSTAR
0.0026979
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #91 in the year 1968 (1968-10-20 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 249 DEB Visibility forecast
Loading observer location...
Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-14 16:14:09.847Z | 322.157° NNW | 2025-10-14 16:17:09.847Z | 296.853° NW | 44.107° | 2025-10-14 16:21:09.847Z | 148.925° SSE |
| 10 mins | 2025-10-15 06:02:09.847Z | 161.784° S | 2025-10-15 06:07:09.847Z | 116.701° SE | 25.155° | 2025-10-15 06:12:09.847Z | 64.829° ENE |
| 13 mins | 2025-10-15 07:51:09.847Z | 227.616° WSW | 2025-10-15 07:58:09.847Z | 319.825° NNW | 42.275° | 2025-10-15 08:04:09.847Z | 30.108° NE |
| 6 mins | 2025-10-15 09:47:09.847Z | 301.364° NW | 2025-10-15 09:49:09.847Z | 321.137° NNW | 16.42° | 2025-10-15 09:53:09.847Z | 3.505° NNE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|